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authorEric Anholt <eric@anholt.net>2010-11-18 10:44:34 +0800
committerEric Anholt <eric@anholt.net>2010-11-18 11:16:14 +0800
commit50b4508319cc5277d51a38065850eaa092afc0d4 (patch)
treecbedd85f35b5de1d05a6d480b2ca58c45f3fe7dc /src/mesa/tnl_dd
parent48af60b46540a30c3754f0e59801a62dfb1a146d (diff)
i965: Eliminate dead code more aggressively.
If an instruction writes reg but nothing later uses it, then we don't need to bother doing it. Before, we were just killing code that was never read after it was ever written. This removes many interpolation instructions for attributes with only a few comopnents used. Improves nexuiz high-settings performance .46% +/- .12% (n=3) on my Ironlake.
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